Again leads to my first point. If one shares an IP address with many people this is not an issue. Same benefits that a VPN has. Also IP address is not used as the main way as an identifier. It is your public UUID that can be used to track you.
I know I said that here:
This is an issue with or without a VPN regardless. A VPN only encrypts all the packets sent to the VPN server. The ISP can still see the volume of the data (how much data there actually is). The only way to solve this issue is to remove the SIM from your phone.
Yes, but I’d argue most of that data is very vague. Again, I am talking about day to day browsing on the internet.
I agree with that. Although, at least the EU does have the GDPR. Most US states have nothing.